The largest clown school in Britain offering accredited degrees.

Treehouse motel and treehouse-building school.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

This large collection of tiny things revels in the art of fine machinery well made.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

A couple turned their front yard into an artistic masterpiece.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The Giant Lemon of Lemon Grove.

A large sculptural artwork and garden in Escondido, California.

Canyon walls shrouded in ferns.

The final resting place of the Emperor of the United States and Protector of Mexico.

A miniature view of the park, caught in time.

An artsy hidden staircase leads to breathtaking views of San Francisco.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

Over 315,000 preserved amphibians and reptiles in jars.

A century and a half of research in the sciences and natural history, still going strong.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.